How does the author use foreshadowing in The Beast in the Jungle?

In Chapter Three, it becomes apparent that the novel's conflicts involve a force that is never actually seen or defined very clearly until the very end, the climax, when the Beast springs. Yet two whole lives are lived out in the struggle to define that lurking combatant. The outcome is foreshadowed early on in Chapter One when May suggests that the Beast might actually be the expectation and the fear of falling in love. Marcher has already defined love in a superficial way and responds that he has been in love, which again foreshadows the outcome of the story. Detached as he is from his feelings, he is unable to recognize love when he sees it.